gemu - list jobs in ascending order and make sure new archives/jobs created with
increasing IDs

list jobs in ascending order - that's almost like amazon works
https://forums.aws.amazon.com/thread.jspa?messageID=421246
sorted by creation date.

except it's first sorted by status, but gemu does not support statuses
other than Success

make sure new archives/jobs created with increasing sequental IDs
to avoid race coditions in some tests that should first retrive bunch of
files and then retrieve inventory. with this fix we're sure inventory retrieval
will be _after_ files retrieval (even if happened same second)
fsm - retrieve/download inventory + gemu-test for it
fsm - retrieve/download inventory - improve gemu-tests
fsm - test for retrieve/download_inventory + meta changes